Method of pasteurizing



\4 iii I 0 A ICCEZCIN PATENTED JAN. 12, 1904.

APPLICATION FILED AUG. 3, 1903.

THE NORHI$ PEYERS CO PHOYOI I'IHU. WASNINGTON. D. C.

M. L. FESENMBIER. METHOD OF; PASTEURIZING.

N0 MODEL.

UNITED STATES T al whom itmay concern.- Be it known that I, MICHAEL L.FEsENMEIER, a citizen of the United States, residing at Cumi i Iberland, in the county of Allegany and State of Maryland, have inventednew and useful Improvements in Methods of Pasteurizing, of i which thefollowing is a specification.

This invention has relation to methods of y pasteurizing liquids, andhas for its object the Io provisionof a novel method whereby liquids inclosed vessels will be rapidly and effectively pasteurized or sterilizedwith an economical consumption of fuel for heating purposes. In carryingmy invention into eifectI utilize the heat which has been imparted tothe vessels and their liquid contents in sterilizing or pasteurizing thelatter to heat a vaporous matter, which is then conveyed to and broughtinto contact with cold vessels containing liquids about to be submittedto the pasteurizing process, to which it imparts its heat, therebyeffecting a preliminary heating of the same, and is i then conveyed backto the point where it again I meets with and abstracts the heat from afresh supply of vessels the contents of which have I been pasteurized,thus operating through a cycle by which great economyin fuel expenditureis effected and loss through breakage reduced to a minimum.

In the accompanying drawings, in which I have shown an apparatus adaptedto carry into effect my improved method, Figure 1 is a verticallongitudinal sectional view of the complete apparatus; Fig. 2, a detailsectional view of a water-spraying device used in connection therewith,shown on an enlarged scale. Fig.

3 is a side view of a perforated pipe for introducing live steam intothe apparatus.

Adesignates a closed chamber or casing containing a hot-water tank A,the water in which is heated by means of steam passing through pipes ata.

Within the chamber A is an endless conveyer a drum D and hangs slackbetween the drums O and D, so as to dip into the hot water in tank A. Aseries of rollers U U at the end of the conveyer receive the boxes G G,in which the vessels H H, which contain the liquid to 5 be treated, arecontained, and deliver the boxes B, which passes around drums C C andover Patented .faaaar' 12, 1904.

PATENT OFFICE.

A MICHAEL L. FESENMEIER, OF CUMBERLAND, MARYLAND.

METHOD OF PASTEURIZING.

SPECIFICATION formingpart of Letters Patent No. 749,547, dated January12, 1904.

Application filed August 3, 1903. Serial N0- 168,ll6- (No model.)

to an outlet-door P on the end of easing A. At the inlet end of thecasing a door F is located through which the boxes containing theVessels are placed on the conveyer. A large pipe or conduit I leads fromthe bottom of an extension K of the chamber or casing A to a fan L,which is driven from a pulley M by a belt m, and from the fan L a pipeor conduit N leads to a hood 0, which is arranged at the outlet end ofthe apparatus, adoor P being provided through which the bottles areremoved from time to time and after they have been sufficiently cooled.Within the hood 0 is arranged a perforated drum R, which turns on ahollow perforated shaft S, to which water is supplied through a pipe T,and the drum is revolved by means ofa pulley outside the hood, to whichmotion is imparted by'a belt w from a pulley W.

At the inlet end of the apparatus a chimney. V is located, and adamper 1) within the chimney serves toregulate the escape of heatedairand vapor which it may be desired to let off from that end of theapparatus. A drain-pipe z'at the bottom of the bend of pipe I serves tocarry off water from said pipe I.

The operation of the above-described apparatus is as follows: The boxesG, which have perforated bottoms and which contain the vessels H, areplaced on the conveyer at the inlet end of the chamber or casing A andare carried through the hot water in tank A, from which they emerge intothe hood O onto the rollers U U. As the bottles emerge from the hotwater in tank A into hood 0 they are in a heated condition and arecooled by being subjected to the watery vapor sprinkled into the hood bythe revolving drum R, which receives a supply of water from the pipe T.The action of the revolving drum R is such that it breaks the water upinto such small particles that it is suspended in the air insubstantially the condition of a mist or vapor. At the same time thevessels are subjected to contact with the cooled mist or vapor which, aswill be presently described, is brought from the other end of theapparatus through conduit N. After passing over and around the heatedvessels and absorbing heat therefrom the watery vapor and air are drawnto the other end of the apparatus by the suction created by fan L, wherethey pass over and around the incoming vessels, giving the same apreliminary heating, and thereby parting with the greater part of theirheat, and are drawn into the extension K of casing A by the suction ofthe fan and thence up through conduit I and from the fan to the hood 0through conduit N.

By properly regulating the supply of water to drum R and the escape ofcondensed water and vapor at the inlet end of the apparatus the airwithin the same can be kept charged .with watery vapor to any desiredextent.

The method which constitutes my present invention and which is performedby the apparatus above described and which it will be readily understoodcan be effected with other apparatus involves the imparting of heat fromthe vessels coming from the hot-water tank to a watery vapor, theconveying of the heated vapor to the incoming cool vessels, theimparting of heat from the watery vapor to such incoming cool vessels,and the transference of the cooled watery vapor to the starting-point.The supply of finely-divided water and the drawing off of condensedvapor, it is to be understood, are subsidiary features provided for thepurpose of facilitating the carrying out of my improved method.

As an additional feature to the method hereinbefore described and inorder to produce a better and stronger mist or watery vapor I propose tosupply live steam to the apparatus and mingle it with the mist or wateryvapor at a point where such mist or watery vapor after cooling theheated bottles or other vessels in which the material is contained isbeing transferred to the other end of the apparatus.

In the drawings I have shown at O a perforated steam-pipe arrangedtransversely of the chamber A at the point where it joins the hood 0.,Steam is supplied to this pipe from a suitable source of supply andmingles with the mist or watery vapor after the latter has passed overand cooled the heated vessels on the rollers U U.

Having described my invention, I claim 1. The method of pasteurizing orsterilizing material in closed vessels, consisting in passing thevessels through a heating medium, then subjecting them to contact with acool vapor, then conveying the vapor to and bringing it in contact withcool vessels about to be heated, whereby the vessels are given apreliminary heating and the vapor is cooled, and then returning thecooled vapor to the starting-point.

2. The method of pasteurizing or sterilizing material consisting inpassing vessels containing the material through a heating medium, thensubjecting them to contact with a cool watery vapor, then conveying theheated vapor to and bringing it in direct contact with vessels about tobe heated, then returning the cooled vapor to the starting-point,additional watery particles being added to the vapor and condensed waterabstracted at suitable points to maintain the desired degree ofsaturation.

3. The method of pasteurizing or sterilizing material consisting inpassing vessels containing the material through aheating medium, thensubjecting them to contact-with a cool vapor, then mingling live steamwith such vapor then conveying the mingled vapor and steam to andbringing them in contact with cool vessels about to be heated, wherebythe vessels are given a preliminary heating and then returning thecooled vapor to the starting-point.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

MICHAEL L. FESENMEIER.

Witnesses:

CHARLEs E. ME'rz, R. E. TAYLOR.

